CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
INTEREST INCOME:
Loans		$ 1,916,091,000	$ 2,050,667,000	$ 5,773,102,000	$ 6,085,153,000
Interest-earning deposits		7,049,000	46,944,000	47,471,000	138,861,000
Investment securities:
AFS		38,084,000	64,777,000	159,738,000	210,344,000
HTM		24,530,000	16,319,000	71,305,000	49,429,000
Other investments		5,578,000	6,400,000	17,482,000	18,451,000
TOTAL INTEREST INCOME		1,991,332,000	2,185,107,000	6,069,098,000	6,502,238,000
INTEREST EXPENSE:
Deposits and other customer accounts		52,325,000	152,953,000	250,060,000	428,386,000
Borrowings and other debt obligations		317,615,000	413,044,000	1,072,878,000	1,230,134,000
TOTAL INTEREST EXPENSE		369,940,000	565,997,000	1,322,938,000	1,658,520,000
NET INTEREST INCOME		1,621,392,000	1,619,110,000	4,746,160,000	4,843,718,000
Credit loss expense		405,825,000	603,635,000	2,568,808,000	1,684,478,000
NET INTEREST INCOME AFTER CREDIT LOSS EXPENSE		1,215,567,000	1,015,475,000	2,177,352,000	3,159,240,000
NON-INTEREST INCOME:
Consumer and commercial fees		123,834,000	133,049,000	356,907,000	412,566,000
Lease income		742,946,000	735,783,000	2,269,613,000	2,116,503,000
Miscellaneous income, net	[1],[2]	308,222,000	130,033,000	330,165,000	327,849,000
TOTAL FEES AND OTHER INCOME		1,175,002,000	998,865,000	2,956,685,000	2,856,918,000
Net gain(loss) on sale of investment securities		(148,000)	2,267,000	31,646,000	2,646,000
TOTAL NON-INTEREST INCOME		1,174,854,000	1,001,132,000	2,988,331,000	2,859,564,000
GENERAL, ADMINISTRATIVE AND OTHER EXPENSES:
Compensation and benefits		461,992,000	485,920,000	1,391,786,000	1,432,730,000
Occupancy and equipment expenses		152,998,000	156,603,000	464,784,000	441,643,000
Technology, outside service, and marketing expense		124,211,000	178,053,000	386,192,000	482,183,000
Loan expense		67,139,000	98,639,000	219,483,000	308,139,000
Lease expense		612,639,000	523,900,000	1,844,270,000	1,516,984,000
Impairment of goodwill		0	0	1,848,228,000	0
Other expenses		150,249,000	190,129,000	427,978,000	536,366,000
TOTAL GENERAL, ADMINISTRATIVE AND OTHER EXPENSES		1,569,228,000	1,633,244,000	6,582,721,000	4,718,045,000
INCOME / (LOSS) BEFORE INCOME TAX (BENEFIT)/PROVISION		821,193,000	383,363,000	(1,417,038,000)	1,300,759,000
Income tax (benefit)/provision		(53,343,000)	112,927,000	(272,856,000)	384,467,000
NET INCOME / (LOSS) INCLUDING NCI		874,536,000	270,436,000	(1,144,182,000)	916,292,000
LESS: NET INCOME ATTRIBUTABLE TO NCI		101,701,000	66,831,000	82,087,000	250,086,000
NET INCOME / (LOSS) ATTRIBUTABLE TO SHUSA		$ 772,835,000	$ 203,605,000	$ (1,226,269,000)	$ 666,206,000

[1] Includes equity investment income/(expense), net.

[2] Netted down by impact of $56.6 million, and $387.9 million for the three-month and nine-month periods ended September 30, 2020, respectively, compared to $67.0 million and $239.1 million for the corresponding periods in 2019 of lower of cost or market adjustments on a portion of the Company's LHFS portfolio.